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Open Access Article
1 - Characterization of cubic derivations on various class of Banach algebras
Fariba Farajpour Ali Ebadian Shahram NajafzadehLet A be a Banach algebra and X be a Banach A-bimodule. A mapping D:A--->X is called a cubic derivation if, for all a,bin A we have D(ab)=a^3D(b)+D(a)b^3 . The mapping D:A--->X is called a cubic homogenous map if we have D(lambda a)=lambda^3 D(a) for all ain A and MoreLet A be a Banach algebra and X be a Banach A-bimodule. A mapping D:A--->X is called a cubic derivation if, for all a,bin A we have D(ab)=a^3D(b)+D(a)b^3 . The mapping D:A--->X is called a cubic homogenous map if we have D(lambda a)=lambda^3 D(a) for all ain A and lambdain C. In this paper, we define linear-cubic map and linear-cubic derivation as follows. We say the cubic homogenous map D:A--->X is a linear-cubic map if we have D(lambda a+b)=lambda^3D(a)+D(b) , for all a,bin A and lambdain C and moreover if D:A--->X is a cubic derivation, then we call it a linear-cubic derivation. In this paper, we characterize linear-cubic derivations on various class of Banach algebras such as Banach algebras obtained by theta-Lau product, module extensions of Banach algebras and amalgamated Banach algebras. For characterizing, we define theta-cubic derivation and module cubic mappings. For Banach algebra Atimes_theta B , where thetainsigma(A)cup{0} and A is unital, we show that D:A--->X is a linear-cubic derivation if and only if there are theat -cubic derivation D_B,A:B--->A and linear-cubic derivations D_A:A--->A and D_B:B---> B such that for any (a,b)in Atimes_theta B, be as follows D(a,b)=(D_A(a)+D_B,A(b),D(b)) and these mappings satisfy in the given condition. We obtain similar results for module extensions of Banach algebras and amalgamated Banach algebras. Manuscript profile -
Open Access Article
2 - Distinguished pairs of algebraic elements
َAzadeh NiksereshtLet v be a henselian valuation on a field K, and v ̃ be its unique extension to the algebraic closure K ̃ of K. An element α∈K ̃K has a distinguished pair if the corresponding set M(α,K) (defined as the following) has a maximum elementM(α,K)={v ̃( MoreLet v be a henselian valuation on a field K, and v ̃ be its unique extension to the algebraic closure K ̃ of K. An element α∈K ̃K has a distinguished pair if the corresponding set M(α,K) (defined as the following) has a maximum elementM(α,K)={v ̃(α-β)┤β in K ̃,[K(β) ∶K]<[K(α) ∶K]}.In this case, a pair (α,β) of elements of K ̃ is a distinguished pair for α whenever β is an element of smallest degree over K such that degα>degβ and v ̃(α-β)=supM(α,K). In this paper, we first present some results about distinguished pairs of algebraic elements of arbitrary degree over henselian valued fields. Then considering the importance of algebraic elements of prime degree in the extensions of valued fields, we concentrate on such elements. In particular, for α∈K ̃ of prime degree over K, we give a necessary and sufficient condition for the existence of the maximum of the corresponding set M(α,K) by using the minimal polynomial of α over K. Manuscript profile -
Open Access Article
3 - Brand extension feedback: The role of advertising(Case Study: tabarok Companyproducts)
hadis ebrahimi Malihe JavaniThe present study is a practical research from purpose view and is a descriptive-survey one from methodological perspective. The statistical population of this study includes consumers of Tabarrok Company in the city of Isfahan. A sample of 384 consumers has been select MoreThe present study is a practical research from purpose view and is a descriptive-survey one from methodological perspective. The statistical population of this study includes consumers of Tabarrok Company in the city of Isfahan. A sample of 384 consumers has been selected from this population through random sampling method. In order to collect the research data, a standardized questionnaire has been used. The validity of the questionnaire has been examined and confirmed through confirmatory factor analysis and its reliability has been measured through Cronbachs’ Alpha Coefficient. The coefficient was 0.88 for our questionnaire by which reliability of the questionnaire has been confirmed. The hypotheses have been tested through both descriptive statistics and inferential statistics in the SPSS and AMOS. The results of this study revealed that the firth, second, and third hypotheses (the effect of brand image and loyalty on the brand extension and the effect of brand extension on the brand loyalty) were rejected and other five hypotheses (the effect of brand image on the brand loyalty, the effect of brand awareness on the brand image and brand expansion, the effect of commercial advertisements on the brand image and brand loyalty) were supported. Another part of the results of this study indicated that the path coefficient of the first hypothesis (the effect of brand image on the brand loyalty) was 0.596. The coefficient was more than other coefficients. On the other hand, the path coefficient of the eighth hypothesis (the effect of brand loyalty on the brand expansion) was -0.624 which is less than other coefficients. Manuscript profile -
Open Access Article
4 - Effect of Brand Extension Strategy on Brand Image on FMCG and Services Sectors
H. Vazifehdust M. HaririBrand-extension strategies enhance success chances of new products, even though they expose brand image to dilution risks. The present work analyzes how brand-extension evaluation can affect the current brand image and test a theoretical model formed by five main factor MoreBrand-extension strategies enhance success chances of new products, even though they expose brand image to dilution risks. The present work analyzes how brand-extension evaluation can affect the current brand image and test a theoretical model formed by five main factors related to brand associations, extension congruency and extension attitude. The model tested by path analysis using data from 391 surveys developed under market conditions. The results verify that extension attitude influences brand image, whereas initial brand associations and perceived fit between the new product and either the remaining products (category fit) or the brand image (image fit) are able to strengthen consumer attitude. The study also explains the initial image is the significant factor which influences final image. Manuscript profile -
Open Access Article
5 - Brand Extension Feedback: The Role of Advertising (Case Study: Tabarrok Company Products)
H. Ebrahimi M. Bagheri GalehSalimiThe companies usually use brand extension as a path to introduce their new products in the markets. Brand extension may pave the ground for entering new areas of market through producing and offering different products under existing brand and thereby decrease risks of MoreThe companies usually use brand extension as a path to introduce their new products in the markets. Brand extension may pave the ground for entering new areas of market through producing and offering different products under existing brand and thereby decrease risks of perceived image of new product. The purpose of this study is to investigate the customers’ evaluation from familiar brand extension and the role of commercial advertisements in its success. The present study is a practical research from purpose view and is a descriptive-survey one from methodological perspective. The statistical population of this study includes consumers of Tabarrok Company in the city of Isfahan. A sample of 384 consumers has been selected from this population through random sampling method. In order to collect the research data, a standardized questionnaire has been used. The validity of the questionnaire has been examined and confirmed through confirmatory factor analysis and its reliability has been measured through Cronbachs’ Alpha Coefficient. The coefficient was 0.88 for our questionnaire by which reliability of the questionnaire has been confirmed. The hypotheses have been tested through both descriptive statistics (including frequencies, percentages, cumulative percentages, and standard deviation) and inferential statistics (including T-test, analysis of variance, Colmogorv-Smirinov, and Freedman test) in the SPSS and AMOS. The results of this study revealed that the firth, second, and third hypotheses (the effect of brand image and loyalty on the brand extension and the effect of brand extension on the brand loyalty) were rejected and other five hypotheses (the effect of brand image on the brand loyalty, the effect of brand awareness on the brand image and brand expansion, the effect of commercial advertisements on the brand image and brand loyalty) were supported. Another part of the results of this study indicated that the path coefficient of the first hypothesis (the effect of brand image on the brand loyalty) was 0.596. The coefficient was more than other coefficients. On the other hand, the path coefficient of the eighth hypothesis (the effect of brand loyalty on the brand expansion) was -0.624 which is less than other coefficients. Manuscript profile -
Open Access Article
6 - Explaining the sources of tension in Iran-Afghanistan relations during the Taliban era based on the theory of Camp and Harkavy
mehdi mousavi shidi بهادر zareiAfghanistan is a country located in the east of Iran and has had ups and downs with Iran throughout its history. An examination of Afghanistan's relations with Iran at a time when the Taliban have taken control of the country has shown strained relations and tensions be MoreAfghanistan is a country located in the east of Iran and has had ups and downs with Iran throughout its history. An examination of Afghanistan's relations with Iran at a time when the Taliban have taken control of the country has shown strained relations and tensions between the two countries. Given the Taliban's dominance of most of Afghanistan, it is important to identify areas that could lead to conflict in Iran's relations with the country. Therefore, this descriptive-analytical study seeks to identify areas of conflict between Iran and Afghanistan at present using the theory of Jeffrey Camp and Robert Harkawy. The results of the study show that the most important areas of conflict in Iran-Afghanistan relations are currently in four dimensions: demographic trends and illegal migration from Afghanistan to Iran (more than two million illegal immigrants), religious conflicts and Ethnicity between the two countries (conflict between pro-Sunni terrorist groups in Afghanistan and Iranian Shiites), territorial disputes and the resulting disputes (dispute between the two countries over the Helmand River and the two countries' non-compliance with the 1973 agreement on it and differences between the two countries The country is about Islam Qala) and the dependence of Sistan and Baluchestan water on Afghan water (destructive economic, social and environmental consequences such as migration, rising unemployment and environmental degradation in Sistan and Baluchestan province due to water shortages). Manuscript profile -
Open Access Article
7 - Criminological Explanation of The Influence of Lived Experiences on The Strengthening of Criminal Tendencies in Cyber Space Subject of Study: Great Tehran Prison (Fashafouye)
Gelavizh Sheikholeslami vatani Mohhamad Ashouri Nasrin Mehra Mohammad Ali MahdaviSabetIn the process of evolution from thought to criminal action, what happens to a cyber-criminal in his/her initial or continuous desire to commit a crime is the strong criminal tendency and the lack or, in some case,s weakness of the deterrents that cause him not to join MoreIn the process of evolution from thought to criminal action, what happens to a cyber-criminal in his/her initial or continuous desire to commit a crime is the strong criminal tendency and the lack or, in some case,s weakness of the deterrents that cause him not to join the society. This gradual process, which concentrates on risk components in different age periods based on three basic components including learning patterns and learned lessons, suppressed childhood experiences and memories and finally the lack of family and social bonds, will be studied in this paper. Therefore, the present research, employing causality perspective, explains how the social forces (family, friends, culture, environmental conditions, poverty, etc.) can be effective in creating a criminal identity? An approach that aims to achieve practical results tested a range of variables in the light of theoretical criminological foundations on the statistical population of cyber-criminals to be able to achieve a causal cognitive model based on the most important factors influencing their criminal course. Variables that often cause the appearance, continuity and stability of cybercrimes are acquired and learned and that the human nature (inheritance) play insignificant role the formation of cyber crimes. Hence, the current research, which is a collective and phenomenological research, is descriptive-analytical in terms of its nature and method, and in terms of purpose is practical. The statistical population of this research consists of a group of convicts of Great Tehran Prison (Fashafouye) who are serving their sentence in the said prison. The findings describe the fact that the propensity for cybercrime and movement towards it is not a single event but a product of a gradual and staggered process. It is worth mentioning that the statistical calculations were done using SPSS22 software and based on descriptive-inferential statistics (by applying the multivariate regression equation method). Manuscript profile -
Open Access Article
8 - MEMRI’s Narrative of Iran in the Context of Current US-Iran Tensions
Kaveh Bolouri Mazdak Bolouri -
Open Access Article
9 - The Islamic Republic of Iran's Defensive Action against US Neoconservative Hegemony: From Post JCPOA to 2019
Younes Forouzan Abdolreza Alishahi Majid RafieiAs neo-conservatives entered the White House, many of Barack Obama's policies of democracy, dialogue, and de-escalation replaced policies that actually exacerbated challenges with American rivals. For example, the intensification of economic competition with the People' MoreAs neo-conservatives entered the White House, many of Barack Obama's policies of democracy, dialogue, and de-escalation replaced policies that actually exacerbated challenges with American rivals. For example, the intensification of economic competition with the People's Republic of China, the failure of a strong alliance with the European Union, and ultimately the intensification of challenges with the Islamic Republic of Iran. In this article, the authors seek to answer the question of what is the policy of the Islamic Republic's approaches to US neoconservative threats, especially after Trump's entry into the White House. This article by using analytical-descriptive theory and written and virtual sources try to answer this question. The authors hypothesize that US threats to the Islamic Republic of Iran will never take place in the military dimension, and the findings of the article also show that the Islamic Republic of Iran's defense action against US military threats is based on three major principles. First, The Increasing Power of the Missile and Deterrent System of the Islamic Republic of Iran, Second; the broad coalition of Shiite resistance in the region; Third, the fragile nature of the United States in the region; and Fourth, the bitter experience of US presence in the region, especially Iraq and Afghanistan. Manuscript profile -
Open Access Article
10 - A study of defectless and vs-defectless extensions of valued fields
َA. Nikseresht -
Open Access Article
11 - Explanation of Obstacles to the Realization of Silk from the Perspective of the Convergence Theory
Ghasem Torabi Raziye SaneieChina’s one belt one road (OBOR) initiative unveiled by President Xi Jinping in 2013, aims to restore the country’s old land and sea trade routes and to boost economic connectivity between Asia, Europe and Africa. It covers 65 countries and six economic corr MoreChina’s one belt one road (OBOR) initiative unveiled by President Xi Jinping in 2013, aims to restore the country’s old land and sea trade routes and to boost economic connectivity between Asia, Europe and Africa. It covers 65 countries and six economic corridors accounting for two thirds of the world’s population and one third of the world’s GDP. In this paper the authors look at the opportunities it offers and some of the challenges for investors China’s one belt one road. In this sense, we focused on domestic constraints, tensions in China's neighbourhood, and great power rivalries. Finally, we tried to offer several suggestions regarding the improvement of China’s initiative. The suggestions concern the initiative’s planning and implementation, the means to improve its bilateral relations with neighbours and great powers, in order to be perceived as a responsible power on the international arena. Manuscript profile
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